release bls@0.2.2

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.2.2] - 2020-02-12
+
+###Bugfixes:
+- updated bls wasm binding version - it isn't catching unhandled rejections and modify stacktraces